3 years ago

ASTRONOMY HELP :

Physics

1 answer:

sergeinik [125]3 years ago

4 0

Answer:

5: False

4: True

3: True (I think)

Explanation:

You might be interested in

What are the answers is a quiz

defon

Answer:19

Explanation:

4 0

3 years ago

What’s the velocity of a ball falling with 100 joules of kinetic energy and a mass of 2 kilograms

ohaa [14]

Answer:

the velocity is 10 m/s

Explanation:

Using the expression for kinetic energy we have:

$Ek=\frac{1}{2} *m*v^{2} \\\\Ek=100J\\m=2kg\\v=\sqrt{(2*100/2)}\\ v=10[m/s]$

3 0

3 years ago

MOST elements on the periodic table are

lidiya [134]

Answer:

Explanation:

6 0

3 years ago

Read 2 more answers

what would happen to the size of the shadow if the distance between the light and the hand is increased.

Sergio039 [100]

I don’t think I will have any time to go

8 0

3 years ago

A parallel plate capacitor is constructed using two square metal sheets, each of side L = 10 cm. The plates are separated by a d

Snowcat [4.5K]

Answer:

The energy stored is 1.4 x 10^-9 J.

Explanation:

Side of square, L = 10 cm = 0.1 m

Distance, d = 2 mm = 0.002 m

Electric field, E = 4000 V/m

The energy stored in the capacitor is

$U = 0.5 C V^2$

The capacitance is given by

$C = \frac{\varepsilon o A}{d}\\\\So \\\\U = 0.5\frac{\varepsilon o A}{d}\times E^2 d^2\\\\U = 0.5\times 8.85\times 10^{-12}\times 0.1\times 0.1\times 4000\times 4000\times 0.002\\\\U = 1.4\times10^{-9} J$

7 0

2 years ago